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| author | Catalin Marinas <catalin.marinas@arm.com> | 2012-07-25 17:32:38 +0400 |
|---|---|---|
| committer | Steve Capper <steve.capper@linaro.org> | 2013-06-04 19:52:37 +0400 |
| commit | 1355e2a6eb88f04d76125c057dc5fca64d4b6a9e (patch) | |
| tree | af2c21aba209583f46e2424aec2e5d70b80c7965 /arch/arm/include/asm/pgtable-3level-hwdef.h | |
| parent | 0b19f93351dd68cb68a1a5b2d74e13d2ddfcfc64 (diff) | |
| download | linux-1355e2a6eb88f04d76125c057dc5fca64d4b6a9e.tar.xz | |
ARM: mm: HugeTLB support for LPAE systems.
This patch adds support for hugetlbfs based on the x86 implementation.
It allows mapping of 2MB sections (see Documentation/vm/hugetlbpage.txt
for usage). The 64K pages configuration is not supported (section size
is 512MB in this case).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
[steve.capper@linaro.org: symbolic constants replace numbers in places.
Split up into multiple files, to simplify future non-LPAE support,
removed huge_pmd_share code, as this is very rarely executed,
Added PROT_NONE support].
Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm/include/asm/pgtable-3level-hwdef.h')
| -rw-r--r-- | arch/arm/include/asm/pgtable-3level-hwdef.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/pgtable-3level-hwdef.h b/arch/arm/include/asm/pgtable-3level-hwdef.h index 18f5cef82ad5..42df407ee3e3 100644 --- a/arch/arm/include/asm/pgtable-3level-hwdef.h +++ b/arch/arm/include/asm/pgtable-3level-hwdef.h @@ -30,6 +30,7 @@ #define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0) #define PMD_TYPE_TABLE (_AT(pmdval_t, 3) << 0) #define PMD_TYPE_SECT (_AT(pmdval_t, 1) << 0) +#define PMD_TABLE_BIT (_AT(pmdval_t, 1) << 1) #define PMD_BIT4 (_AT(pmdval_t, 0)) #define PMD_DOMAIN(x) (_AT(pmdval_t, 0)) #define PMD_APTABLE_SHIFT (61) @@ -66,6 +67,7 @@ #define PTE_TYPE_MASK (_AT(pteval_t, 3) << 0) #define PTE_TYPE_FAULT (_AT(pteval_t, 0) << 0) #define PTE_TYPE_PAGE (_AT(pteval_t, 3) << 0) +#define PTE_TABLE_BIT (_AT(pteval_t, 1) << 1) #define PTE_BUFFERABLE (_AT(pteval_t, 1) << 2) /* AttrIndx[0] */ #define PTE_CACHEABLE (_AT(pteval_t, 1) << 3) /* AttrIndx[1] */ #define PTE_EXT_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */ |